Evaporator



June 17, 1924. 1,4 ,372

F. M. HARTMAN EVAPORATOR Filed July 29. 1920 Patented June 17, 1924.

warren starts 1 ia-an FRANCIS IVL HARTMAN, or EARLETON, FLORIDA.

EvAPoRATon. I

Application filed iui 29,

To all whom it may concern:

Be it known that I, FRANCIS M. HARTMAN, a citizen of the United States of America, residing at Earleton, in the county of Ala chua and State of Florida, have invented new and useful Improvements in Evaporators,'of Which the following is a specification.

The object of the invention is to provide simple, inexpensive and efficient evaporating means designed especially for use in the production from juices, saps and like materials of a syrup under conditions minimizing the necessity for manipulation and treatment by attendants during the operation for removing the incident precipitate, or necessity of skimming the liquid to remove the undesirable portions thereof which are separated in the boiling operation, to the end that by maintaining a substantially uniform application of heat the operation of reducing or purifying the liquid may proceed continuously to permit of the continuous supply of the desired product without incurring any of the disadvantages of the present methods, and in fact under such circumstances as to secure a greater uniformity in quality of the product, and with these objects in view, the invention consists in the construction and combination of parts, of which a pre ferred embodiment is shown in the drawin s, wherein Figure 1, is a perspective view of the evaporting apparatus.

Figure 2, is a longitudinal sectional view of the same.

Figure 8, is a transverse sectional view 0 the line 33 of Figure 2.

The device consists essentially of a pan 10 provided with a valved inlet 11 at the top edge at one end and a valved outlet 12 adjacent the bottom at the other end, which for convenience may be respectivelv termed the inlet and outlet ends of the pan ,and the transverse projections or bafiles 14; arranged in the pan, said projections or baffles being of graduated heights increasing in step by step relation from the inlet toward the outlet end of thereceptacle as indicated in Figure 2. The pan is divided by said projections or baflies into a series of chambers 15 of graduated depth corresponding respec- 1920. Serial No. 399,802.

tively with the projections or baffles and are arranged 1n connectlon with each other by a series of openings 16 disposed respectively at opposite ends of adjacent projections to employ heat as in the process of ordinary evaporation and it is desirable, of course, to mamtam a substantially uniform degree of heat the temperature being sufficient to inaintain the contents of the several chambers or compartments at a boiling point so that the froth or scum which in the reduction or evaporation of the liquid is separated from the syrup and rising to the top of the liquid in the receptacle or compartment is removed therefrom in the ordinary operation by employing attendants to skim the same. i

In the described construction, this scum as it rises to the top ofthe liquid in the compartment or receptacle passes over the edge of the partition or baffle at the lower side of the compartment or at the side toward the inlet end of the pan so that the scum finds its way step by step in sequence from one compartment or receptacle to another until it reaches the inlet end of the tank, while the incoming untreated liquid passes thereunder and progresses in the opposite direction through the series of compartments or receptacles toward the outlet or delivery end of the tank. By regulating the controlling valves by which the supply and delivery is controlled after the operation has been well started and the contents of the delivery chamber or the compartments or outlets in connection with the delivery pipe or passage have been reduced to the proper condition of syrup it is possible to withdraw particular attention from the contents of the tank so that the operator mav devote himself entirely to the task of maintaining a substantial uniformity of the product. The liquid in its passage from the inlet to the outlet end will receive a treatment which is sufficient to properly eliminate all materials which should be removed following the operation of boiling and the liquid will reach the terminal compartment or chamber at the outlet end of the tank in proper condition to pass through the outlet as a completed product, the froth or scum above indicated passing successively from the upper edges of the projections and baffles to the compartment or chamber at the inlet end of the receptacle Where it may be removed by any convenient means.

The baffles 14 are composed of angle iron and the flanges thereof rest upon the upper surface of the bottom of the pan 10. Therefore the lower edges of the openings 16 are spaced above the upper surface of the bottom of the pan and the edges of the flanges of the baflies may serve as means for catching and retaining the sediment in the liquid as the liquid passes through the pan and the openings in the baffle plates.

The invention having been described, What is claimed as new and useful is An evaporating apparatus comprising a pan, and a plurality of transversely disposed baflles located in the pan and transversely spanning the same, said baffles being ture.

FRANCIS M. HARTMAN. 

